Depreciation schedule prescribes specific allowance percentages for defined asset classes under income tax rules. Prescribed depreciation schedule under Income-tax Rules (rule 5(1A)) assigns specific percentage allowances of actual cost to defined asset classes for tax depreciation. It differentiates rates for generating plant, cooling and hydraulic works, buildings and civil works (including temporary erections), electrical and distribution apparatus, meters, vehicles, air conditioning, office fittings, hire assets, communication equipment and a residual category, thereby providing a classification framework for computing capital allowances.